DI Sample

product_controller.rb

class ProductController < ApplicationController

  def index
    @products = Product.all
  end

end

ProductController.cs

public class ProductController : Controller
{
    private IProductRepository _productRepository;

    public ProductController(IProductRepository productRepository)
    {
        _productRepository = productRepository;
    }

    public ActionResult Index()
    {
        products = productRepository.getAll();
        return View(products);
    }
}

@hotgazpacho It does not call the filters... but that's what I want! I want to be able to unit test the controller action in isolation from anything else.

I am a rare bird 🐦 as I use Rails yet I unit test my code. I know there are debates about unit testing versus integration tests, but to me -- without unit tests, I can't TDD, and if I can't TDD I'm not able to architect and verify my output.

I also use few filters.... if things get complicated, I'll string an integration test through them. But if things are complicated, I'm doing something else wrong. 😆

This may be a perfectly good way to code it, and to test it. It's simple, I like it, and it'll probably do just fine. IMO, however, it is not Dependency Injection, simply because there is no injection going on.